diff options
Diffstat (limited to 'bluetooth/audio/aidl/default/LeAudioSoftwareAudioProvider.cpp')
| -rw-r--r-- | bluetooth/audio/aidl/default/LeAudioSoftwareAudioProvider.cpp | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/bluetooth/audio/aidl/default/LeAudioSoftwareAudioProvider.cpp b/bluetooth/audio/aidl/default/LeAudioSoftwareAudioProvider.cpp new file mode 100644 index 0000000000..f9962fd9d9 --- /dev/null +++ b/bluetooth/audio/aidl/default/LeAudioSoftwareAudioProvider.cpp @@ -0,0 +1,125 @@ +/* + * Copyright (C) 2022 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#define LOG_TAG "BTAudioProviderLeAudioHW" + +#include "LeAudioSoftwareAudioProvider.h" + +#include <BluetoothAudioCodecs.h> +#include <BluetoothAudioSessionReport.h> +#include <android-base/logging.h> + +#include <cstdint> + +namespace aidl { +namespace android { +namespace hardware { +namespace bluetooth { +namespace audio { + +static constexpr uint32_t kBufferOutCount = 2; // two frame buffer +static constexpr uint32_t kBufferInCount = 2; // two frame buffer + +inline uint32_t channel_mode_to_channel_count(ChannelMode channel_mode) { + switch (channel_mode) { + case ChannelMode::MONO: + return 1; + case ChannelMode::STEREO: + return 2; + default: + return 0; + } + return 0; +} + +LeAudioSoftwareOutputAudioProvider::LeAudioSoftwareOutputAudioProvider() + : LeAudioSoftwareAudioProvider() { + session_type_ = SessionType::LE_AUDIO_SOFTWARE_ENCODING_DATAPATH; +} + +LeAudioSoftwareInputAudioProvider::LeAudioSoftwareInputAudioProvider() + : LeAudioSoftwareAudioProvider() { + session_type_ = SessionType::LE_AUDIO_SOFTWARE_DECODING_DATAPATH; +} + +LeAudioSoftwareAudioProvider::LeAudioSoftwareAudioProvider() + : BluetoothAudioProvider(), data_mq_(nullptr) {} + +bool LeAudioSoftwareAudioProvider::isValid(const SessionType& sessionType) { + return (sessionType == session_type_); +} + +ndk::ScopedAStatus LeAudioSoftwareAudioProvider::startSession( + const std::shared_ptr<IBluetoothAudioPort>& host_if, + const AudioConfiguration& audio_config, DataMQDesc* _aidl_return) { + if (audio_config.getTag() != AudioConfiguration::pcmConfig) { + LOG(WARNING) << __func__ << " - Invalid Audio Configuration=" + << audio_config.toString(); + return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT); + } + const auto& pcm_config = audio_config.get<AudioConfiguration::pcmConfig>(); + if (!BluetoothAudioCodecs::IsSoftwarePcmConfigurationValid(pcm_config)) { + LOG(WARNING) << __func__ << " - Unsupported PCM Configuration=" + << pcm_config.toString(); + return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT); + } + + uint32_t buffer_modifier = 0; + if (session_type_ == SessionType::LE_AUDIO_SOFTWARE_ENCODING_DATAPATH) + buffer_modifier = kBufferOutCount; + else if (session_type_ == SessionType::LE_AUDIO_SOFTWARE_DECODING_DATAPATH) + buffer_modifier = kBufferInCount; + + uint32_t data_mq_size = + (ceil(pcm_config.sampleRateHz) / 1000) * + channel_mode_to_channel_count(pcm_config.channelMode) * + (pcm_config.bitsPerSample / 8) * (pcm_config.dataIntervalUs / 1000) * + buffer_modifier; + + LOG(INFO) << __func__ << " - size of audio buffer " << data_mq_size + << " byte(s)"; + + std::unique_ptr<DataMQ> temp_data_mq( + new DataMQ(data_mq_size, /* EventFlag */ true)); + if (temp_data_mq == nullptr || !temp_data_mq->isValid()) { + ALOGE_IF(!temp_data_mq, "failed to allocate data MQ"); + ALOGE_IF(temp_data_mq && !temp_data_mq->isValid(), "data MQ is invalid"); + *_aidl_return = DataMQDesc(); + return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT); + } + data_mq_ = std::move(temp_data_mq); + + return BluetoothAudioProvider::startSession(host_if, audio_config, + _aidl_return); +} + +ndk::ScopedAStatus LeAudioSoftwareAudioProvider::onSessionReady( + DataMQDesc* _aidl_return) { + if (data_mq_ == nullptr || !data_mq_->isValid()) { + *_aidl_return = DataMQDesc(); + return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT); + } + *_aidl_return = data_mq_->dupeDesc(); + BluetoothAudioSessionReport::OnSessionStarted(session_type_, stack_iface_, + _aidl_return, *audio_config_); + return ndk::ScopedAStatus::ok(); +} + +} // namespace audio +} // namespace bluetooth +} // namespace hardware +} // namespace android +} // namespace aidl
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